I may be wrong here, but weren't EZY at EMA first (when it was Go)? The problem there was they allowed it to stagnate and never showed much interest. I was under the impression FR rolled into town after Go did, but I might be wrong. If I'm right, however, then it's not quite an equal comparison.
The difference between the two, obviously, is that when EZY closed EMA they effectively admitted it wasn't viable for them and couldn't work - a rather more dignified approach to Ryanair's system of copying and pasting old press releases berating whoever has refused to bow to their daft demands (see the Manchester Airport CEO's comments about FR effectively asking to fly there for free), and just changing a few words and names.
So not quite horses for courses.